/**
* Removes unused namespaces.
*
* @param node to be modified
*/
private static void noPreserve(final ANode node) {
final Atts ns = node.namespaces();
final byte[] pref = node.qname().prefix();
for (int i = ns.size() - 1; i >= 0; i--) {
boolean f = eq(ns.name(i), pref);
final AxisIter atts = node.attributes();
for (ANode it; f && (it = atts.next()) != null; ) {
f |= eq(it.qname().prefix(), pref);
}
if (!f) ns.delete(i);
}
}
/**
* Sets the parameters of a prepared statement.
*
* @param params parameters
* @param stmt prepared statement
* @throws QueryException query exception
*/
private void setParameters(final AxisMoreIter params, final PreparedStatement stmt)
throws QueryException {
int i = 0;
for (ANode next; (next = params.next()) != null; ) {
// Check name
if (!next.qname().eq(E_PARAM)) PARWHICH.thrw(input, next.qname());
final AxisIter attrs = next.attributes();
byte[] paramType = null;
boolean isNull = false;
for (ANode attr; (attr = attrs.next()) != null; ) {
// Attribute "type"
if (eq(attr.nname(), TYPE)) paramType = attr.atom();
// Attribute "null"
else if (eq(attr.nname(), NULL))
isNull = attr.atom() != null && Bln.parse(attr.atom(), input);
// Not expected attribute
else throw NOTEXPATTR.thrw(input, string(attr.nname()));
}
if (paramType == null) NOPARAMTYPE.thrw(input);
final byte[] v = next.atom();
isNull |= v.length == 0;
setParam(++i, stmt, paramType, isNull ? null : string(v), isNull);
}
}